Machine



(ModeL) W E. TRULL.

BUTTON RULE SEWING MACHINE. N0. 320,448. Patented June 16, 1885.

UNITED STAT S PATENT .OFFICE.

WILLIAM E. TRULL, OF JERSEY CITY, NEW JERSEY.

BUTTON-HOLE SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 320,448, dated June 16,1885.

Application filed December 10, 1883. (Model) To all "whom it may concernBe it known that I, WILLIAM E. TRULL, a citizen of the United States,residing at Jersey City, in the county of Hudson and State ofNew Jersey,have invented certain new and useful Improvements in Button-Hole Sewing-Machines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to certain novel and useful improvements inbutton-hole sewing attachments for sewing-machines, but is moreespecially designed as an improvement on the construction shown anddescribed in Letters Patent No.2ll,932,granted February 4, 1879, toSamuel Rockwell, and No. 206,768, granted August 6, 1878, to Samuel J.Baird.

The object of my invention is to do away with the turret and the drivingmechanism contained thereinsnch as is described and illustrated in saidpatents-and to provide means for effecting the oscillation and feedingexceedingly simple and actuated by the movement of the needle-bar,whereby the attachment is more readily adapted to any sewing machine;and with these ends in view my in vention consists in the details ofconstruction and combination of elements hereinafter fully and in detailexplained, and then specifically designated by the claims.

In order that those skilled in the art to which my invention appertainsmay understand more fully its construction and operation, I will proceedto describe the same, re ferring by letters to the accompanyingdrawings, forming a part of this specification, in which- Figure 1 is avertical longitudinal section showing the arrangement of theoperatinglever within the casing and the means for adjustin g the sameto regulate the sweep thereof 5 Fig. 2, a bottom view with the casingremoved, and Fig. 3 a similar view with all the parts removed except thegearwheels and operating pawl and ratchet.

Similar letters denote like parts in the several figures of thedrawings.

A is the main spur-gear or master wheel, which is on the same shortshaft with a pinion, B, which meshes with the pinion 0, all of which arefound in the Baird patent above mentioned. The masterwheel revolves asmall pinion, D, and a camshaft, E, on which it is fastened, preciselyas in said Baird patent.

It is not deemed necessary to show by the drawings and hereinparticularly describe all the parts of a complete attachment-snch as thehorizontally oscillating or vibrating lever, the cloth-clamp orfabric-holder reciprocated in the front end thereof, the cam-frame andthe devices for operating the same to shift it from one side to theother of the button-hole and secure its ends, and to give longitudinalmovements tothe clotlrclamp-said parts being fully shown and describedin the patents above referred to.

My improvement relates only to the mechanism for actuating what isstyled in the Baird patent the master-wheel, and in this respect it ismaterially different from the H1llO"G- mentioned devices.

The side of the casing of the attachment is extended upward, as seen atF, (dotted line,) and to this is pivoted by means of a screw, G, alever, H, and heel piece I. To this heelpiece is attached a small plate,J, by means of a screw, K, a coil'spring, L, being placed between saidheel and plate, so that the latter has a slight spring movementlaterally, as will be presently explained.

' O is a pinion secured on the short shaft 1? and meshing with themaster-wheel A. Q is a ratchet-wheel arranged on the same shaft with thepinion O and within the field of action of the plate J, which acts as apawl on said ratchet.

R are set-screws passed through lugs M on the lever, against oppositesides of the heel I, and by means of which the height of the lever H maybe adjusted independent of the heelpiece, for the purpose of adaplin gthe said lever in its normal position to different machines.

S is a set-screw by means of which the normal position of the heel-pieceis varied, thereby increasing or decreasing the throw of the same, forthe purpose presently explained.

The operation of my improvement is as follows: The extremity of thelever is attached to the reciprocating needle-bar of a sewingmachine. Asthe lever is operated, each upward movement of the same will cause theheel-piece to be thrown forward, and the pawl ratchet will have beenturned around one' tooth, and the master-wheel and mechanisms incombination therewith \villhave performed their functions during saidmovement of the needle bar, in precisely the same manner and with thesame results as they do in the Baird patent, at each complete revolutionof the shaft of the sewing-machine.

The teeth of the ratchetwheel Q are so formed that when they havebeen-acted upon by the pawl J their backs will extend in a planeparallel and contiguous with the sideof said pawl, as seen at Fig. 3, sothat there can be no movement whatever ot' the wheel when in thisrelative position.

The operation of the lever continues as the needlebar moves up and down,and the pawl J, as it moves backward out of contact with one tooth ofthe ratchet, springs inward, owing to the action of the coil-spring L,so that it will be within the vertical plane of the next tooth, so thatit will operate on the latter, as in the case of the previous tooth.

The great advantages gained by my invention are, that I not only do awaywith the expensive and inconvenient turret, thereby greatly simplifyingthe construction, but also all the gears and operating parts inimmediate relation therewith are in similar planes, and the transmittingof movement to the SGVBP'tl gears is of course accomplished with lesspow er than where the gearingwheels are in different planes.

I do not wish to be limited to the exact shape of the lever shown or toany particular way of attaching or connecting the same to theneedle-bar, as in these respects the application of my invention may bevaried.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In a button-hole sewing attachment, the combination, with themaster-wheel of a series of gears, such as shown, for actuating theoscillating and feeding mechanisms, of a ratchet and gear wheel mountedon the same short vertical shaft, and a pawl adapted to engage with saidratchet and attached to the lower extremity of a heel pivoted to anshaped. swinging lever, substantially as set forth.

2. In a button-hole sewing attachment, the combination, with theratchet-wheel and gearwheel mounted on the same shaft, of the lever H,provided with adjustable means for controlling its oscillation, andhaving pivoted thereto the heel I, pawl J, secured to the heel, springL, interposed between said heel and pawl, and the master-wheel of aseries of gears, such as shown, for actuating theoscillating and feedingmechanisms, substantially as set forth.

3. The combination of the pivoted lever H, capable of beingreeiprocated, heel I, pivoted to said lever, set-screws R, passedthrough lugs on said lever against opposite sides of said heel, pawl J,secured to the lower extremity of the heel, spring L, interposed betweensaid pawl and heel, ratchet Q, adapted to be 7 actuated by said pawl andmounted on the same vertical short shaft with the pinion O, and themaster-wheel of a series of gears, such as shown, for actuating theoscillating and feeding mechanisms. substantially as shown anddescribed.

4. In a button-hole sewing attachment, the combination, of the lever H,having pivoted thereto the heel I, pawl J, secured to said heel, ratchetand gear wheels mounted on the same shaft and adapted to con'nnunicatemotion to the master wheel, and set-screws R, passed through'lugs onsaid lever against opposite sides of said heel, whereby the normalheight of the lever may be changed, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM E. TEULL. \Vitnesses S. S. WILLIAMSON, W. T. HAVILAND.

